package com.xie.o2o.config.controller;

import com.google.code.kaptcha.servlet.KaptchaServlet;
import com.xie.o2o.interceptor.shopadmin.ShopAdminVcInterceptor;
import com.xie.o2o.interceptor.shopadmin.ShopLoginInterceptor;
import com.xie.o2o.interceptor.shopadmin.ShopPermissionInterceptor;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.*;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

import javax.servlet.ServletException;

/**
 * 开启Mvc,自动注入spring容器。 WebMvcConfigurerAdapter：配置视图解析器
 * 当一个类实现了这个接口（ApplicationContextAware）之后，这个类就可以方便获得ApplicationContext中的所有bean
 * @create: xie
 */
@Configuration
// 等价于<mvc:annotation-driven/>
@EnableWebMvc
public class MvcConfiguration implements WebMvcConfigurer, ApplicationContextAware {
    //spring容器
    private ApplicationContext applicationContext;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext=applicationContext;
    }

    //默认的请求处理器
    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }
    //静态资源配置
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        //registry.addResourceHandler("/resources/**").addResourceLocations("classpath:/resources/");
        //registry.addResourceHandler("/upload/**").addResourceLocations("file:D:/upload/");
        registry.addResourceHandler("/upload/**").addResourceLocations("file:/home/image/upload/");
    }

    /**
     * 创建 ViewResolver，视图解析器
     * @return InternalResourceViewResolver实例
     */
    @Bean(name = "viewResolver")
    public ViewResolver createViewResolver(){
        InternalResourceViewResolver viewResolver=new InternalResourceViewResolver();
        //设置spring容器
        viewResolver.setApplicationContext(applicationContext);
        //取消缓存
        viewResolver.setCache(false);
        //设置解析前缀
        viewResolver.setPrefix("/WEB-INF/html/");
        //设置解析后缀
        viewResolver.setSuffix(".html");
        return viewResolver;
    }

    /**
     * 文件上传解析器
     * @return
     */
    @Bean(name = "multipartResolver")
    public CommonsMultipartResolver createMultipartResolver() {
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
        multipartResolver.setDefaultEncoding("utf-8");
        // 1024 * 1024 * 20 = 20M
        multipartResolver.setMaxUploadSize(20971520);
        multipartResolver.setMaxInMemorySize(20971520);
        return multipartResolver;
    }


    @Value("${kaptcha.border}")
    private String border;

    @Value("${kaptcha.textproducer.font.color}")
    private String fcolor;

    @Value("${kaptcha.image.width}")
    private String width;

    @Value("${kaptcha.textproducer.char.string}")
    private String cString;

    @Value("${kaptcha.image.height}")
    private String height;

    @Value("${kaptcha.textproducer.font.size}")
    private String fsize;

    @Value("${kaptcha.noise.color}")
    private String nColor;

    @Value("${kaptcha.textproducer.char.length}")
    private String clength;

    @Value("${kaptcha.textproducer.font.names}")
    private String fnames;

    /**
     * 由于web.xml不生效了，需要在这里配置Kaptcha验证码Servlet
     */
    @Bean
    public ServletRegistrationBean<KaptchaServlet> servletRegistrationBean() throws ServletException {
        ServletRegistrationBean<KaptchaServlet> servlet = new ServletRegistrationBean<KaptchaServlet>(new KaptchaServlet(), "/Kaptcha");
        servlet.addInitParameter("kaptcha.border", border);// 无边框
        servlet.addInitParameter("kaptcha.textproducer.font.color", fcolor); // 字体颜色
        servlet.addInitParameter("kaptcha.image.width", width);// 图片宽度
        servlet.addInitParameter("kaptcha.textproducer.char.string", cString);// 使用哪些字符生成验证码
        servlet.addInitParameter("kaptcha.image.height", height);// 图片高度
        servlet.addInitParameter("kaptcha.textproducer.font.size", fsize);// 字体大小
        servlet.addInitParameter("kaptcha.noise.color", nColor);// 干扰线的颜色
        servlet.addInitParameter("kaptcha.textproducer.char.length", clength);// 字符个数
        servlet.addInitParameter("kaptcha.textproducer.font.names", fnames);// 字体
        return servlet;
    }

    /**
     * 添加拦截器
     * @param registry
     */
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        //注册拦截器
        InterceptorRegistration loginIR=registry.addInterceptor(new ShopLoginInterceptor());
        //拦截路径
        loginIR.addPathPatterns("/shopadmin/**");

        //注册其他拦截器
        InterceptorRegistration permissionIR=registry.addInterceptor(new ShopPermissionInterceptor());
        permissionIR.addPathPatterns("/shopadmin/**");
        //配置不拦截的路径
        //shoplist页面
        permissionIR.excludePathPatterns("/shopadmin/shoplist");
        permissionIR.excludePathPatterns("/shopadmin/getshoplist");
        //注册店铺页面
        permissionIR.excludePathPatterns("/shopadmin/getshopinitinfo");
        permissionIR.excludePathPatterns("/shopadmin/registershop");
        permissionIR.excludePathPatterns("/shopadmin/shopoperation");
        //店铺管理页面
        permissionIR.excludePathPatterns("/shopadmin/shopmanagement");
        permissionIR.excludePathPatterns("/shopadmin/getshopmanagementinfo");


        //注册拦截器
        InterceptorRegistration vcIR=registry.addInterceptor(new ShopAdminVcInterceptor());
        vcIR.addPathPatterns("/shopadmin/registershop");
        vcIR.addPathPatterns("/shopadmin/modifyproduct");
        vcIR.addPathPatterns("/shopadmin/addproduct");
        vcIR.addPathPatterns("/shopadmin/modifyshop");
        vcIR.addPathPatterns("/local/bindlocalauth");
        vcIR.addPathPatterns("/local/changelocalpwd");
        vcIR.addPathPatterns("/local/logincheck");
    }
}
